Coatable Li4SnS4 Solid Electrolytes Prepared from Aqueous Solutions for All-Solid-State Lithium-Ion Batteries

被引：90

作者：

Choi, Young Eun ^{[1
]}

Park, Kern Ho ^{[1
]}

Kim, Dong Hyeon ^{[1
]}

Oh, Dae Yang ^{[1
]}

Kwak, Hi Ram ^{[1
]}

Lee, Young-Gi ^{[2
]}

Jung, Yoon Seok ^{[1
]}

机构：

[1] UNIST, Dept Energy Engn, Sch Energy & Chem Engn, Ulsan 44919, South Korea

[2] ETRI, Power Control Device Res Team, 218 Gajeongno, Daejeon 305700, South Korea

来源：

CHEMSUSCHEM | 2017年 / 10卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

batteries; conductivity; solid electrolytes; solution processes; sulfides; LICOO2; ELECTRODE; CATHODE MATERIAL; RECHARGEABLE LI; SULFIDE; CONDUCTOR; LI10GEP2S12; SUPERIOR; FILM;

D O I：

10.1002/cssc.201700409

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bulk-type all-solid-state lithium-ion batteries (ASLBs) for large-scale energy-storage applications have emerged as a promising alternative to conventional lithium-ion batteries (LIBs) owing to their superior safety. However, the electrochemical performance of bulk-type ASLBs is critically limited by the low ionic conductivity of solid electrolytes (SEs) and poor ionic contact between the active materials and SEs. Herein, highly conductive (0.14 mScm(-1)) and dry-air-stable SEs (Li4SnS4) are reported, which are prepared using a scalable aqueous-solution process. An active material (LiCoO2) coated by solidified Li4SnS4 from aqueous solutions results in a significant improvement in the electrochemical performance of ASLBs. Side-effects of the exposure of LiCoO2 to aqueous solutions are minimized by using predissolved Li4SnS4 solution.

引用

页码：2605 / 2611

页数：7

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